Dark field illumination device for microscope



FIG. 1 is a bottom, rear and left side perspective view of a dark field illumination device for microscope, showing our new design;

FIG. 2 is top, front and right side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a cross-sectional view taken along a line 9-9 in FIG. 6 in which the internal mechanisms are omitted to better illustrate the contour thereof; and,

FIG. 10 is a perspective view of the dark field illumination device for microscope inserted into a microscope.

The dash dot broken lines in FIG. 9 depict portions of the dark field illumination device for microscope that form no part of the claimed design. The evenly segmented broken lines in FIG. 10 depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a dark field illumination device for microscope, as shown and described. 